diff options
Diffstat (limited to 'net/samba413/files/0003-CVE-2022-2127-ntlm_auth-cap-lanman-response-length-v.patch')
| -rw-r--r-- | net/samba413/files/0003-CVE-2022-2127-ntlm_auth-cap-lanman-response-length-v.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/net/samba413/files/0003-CVE-2022-2127-ntlm_auth-cap-lanman-response-length-v.patch b/net/samba413/files/0003-CVE-2022-2127-ntlm_auth-cap-lanman-response-length-v.patch new file mode 100644 index 000000000000..a1f873366172 --- /dev/null +++ b/net/samba413/files/0003-CVE-2022-2127-ntlm_auth-cap-lanman-response-length-v.patch @@ -0,0 +1,40 @@ +From de6bd24d80ec4af9d618911cc42d10e109d1d121 Mon Sep 17 00:00:00 2001 +From: Ralph Boehme <slow@samba.org> +Date: Fri, 16 Jun 2023 12:28:47 +0200 +Subject: [PATCH 03/21] CVE-2022-2127: ntlm_auth: cap lanman response length + value + +We already copy at most sizeof(request.data.auth_crap.lm_resp) bytes to the +lm_resp buffer, but we don't cap the length indicator. + +BUG: https://bugzilla.samba.org/show_bug.cgi?id=15072 + +Signed-off-by: Ralph Boehme <slow@samba.org> +--- + source3/utils/ntlm_auth.c | 8 ++++++-- + 1 file changed, 6 insertions(+), 2 deletions(-) + +diff --git a/source3/utils/ntlm_auth.c b/source3/utils/ntlm_auth.c +index 5541c58350b..def8cdef6fa 100644 +--- a/source3/utils/ntlm_auth.c ++++ b/source3/utils/ntlm_auth.c +@@ -573,10 +573,14 @@ NTSTATUS contact_winbind_auth_crap(const char *username, + memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8)); + + if (lm_response && lm_response->length) { ++ size_t capped_lm_response_len = MIN( ++ lm_response->length, ++ sizeof(request.data.auth_crap.lm_resp)); ++ + memcpy(request.data.auth_crap.lm_resp, + lm_response->data, +- MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp))); +- request.data.auth_crap.lm_resp_len = lm_response->length; ++ capped_lm_response_len); ++ request.data.auth_crap.lm_resp_len = capped_lm_response_len; + } + + if (nt_response && nt_response->length) { +-- +2.41.0 + |